Press for the quick drying and glazing of photographic prints



July 24, 1928.

L. CRAYSSAC PRESS FOR THE QUICK DRYING AND GLAZING OF PHOTOGRAPHIC PRINTS Filed Aug. 20, 1927 3 Sheets-Sheet WWW WC MW w a ow x 1,? Nm om EU WT v .wa m

July 24, 1928. 1,677,916

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July 24, 1928.

L. CRAYSSAC PRESS FOR THE QUICK DRYING AND GLAZING OF PHOTOGRAPHI C PRINTS Fild Aug. 20, 1927 s Sheets-Sheet \NVENT a? w w sM/w 7 R a o 0 W lm f Am Patented July 24, 1928.-

UNITED STATES.

PATENT OFFICE.

LEON GRAYSSAG, OF CETTE, FRANCE.

PRESS FOR THE QUICK DRYING AND GLAZING OF PHOTOGBAPHIO PRINTS.

Application filed August 20, 1927, Serial No. 214,391, and in Germany August 26, 1926.

This invention relates to a press for sup-v porting photographic prints, the object of theinvention being to provlde a simple device of this character by means of which the 5 prints are maintained during the process of drying and glazing in such a way eliminate the tendency of the prlnts to roll or curl after being dried.

In the drawings accompanying and forming part of this specification:

Fig. 1 is a transverse sectional view of a device embodying a preferred form of the invention, the

I-I of Fig. 2;

35 Fig. 2 is a plan view, with parts of press broken away;

Fig. 3 is a cross-sectional view, on a larger scale of a part of the frame and shutter constituting the press;

Fig. 4: is a fragmentary horizontal new of the arts shown in'Fig. 3;

Fig. 5 is adetail sectional View illustrating the manner in which the canvas is connected to the sides of the shutter;

Fig. 6 is a fragmentary horizontal view of the parts shown in Fig. 5;

Fig. 7 is a longitudinal sectional view taken along the line VII-V'II of Fig. 2, the central port-ion being omitted, and lllustrating the press in closed position;

Fig. 8 is a view similar to Fig. 7, but illustrating the press in partly open pos1- tion' Fig. 9 is a fragmentary horizontal view of one side of the-press, showing in detail the means for retaining it in closed position. The press comprises a fixed frame made up of cross-pieces A (Figs. 1, 2, 3, 4, 7, 8, and 9) having ends B integral therewith. These ends are provided on their inner sides, with flat pieces C having their upper edges slightly curved upwards so as to give the required shape to a piece of sheet-iron D, which may be galvanized or protected against rust by coats of paint, enamel or an other means.

This piece of sheet-iron D is secured by known means, to the cross-pieces A (Fig. 3) and on the plates C. A piece of canvas E (Figs. 1, 2 and 3) closely woven fully covers the sheet-iron D; it is also fixed on each of the cross-pieces A.

In this manner, the sheet-iron D constitutes a rigid support for the photographic papers F (Fig. 2) placed thereon.

The fixed portion formed by the crossthe view being taken on the line pieces A, the ends B, the flat pieces C and the plece of sheet-iron D receives a lid or shutter, made up of two cross-pieces A A F1g. 1) integral with two other cross-pieces B at right angles to the first, one of .as t0 which cross pieces B carries hinges G. G.

and the other is provided with recesses H. H., shown on Figs. 7, 8, and 9 adapted to receive spring-pieced fasteners H.

The cross-pieces A A of shapes and sizes appropriate to the fixed part ofthe press, are provided, on their lower sides, with a head I (Figs. 1 and 3) adapted to fit into recesses J made into the cross pieces A when the shutter is closed.

A piece of canvas E of a similar means to that of the piece E. is kept taut between the cross-pieces A A by means of the device shown on a larger scale in Fig. i; which device comprises a metal rod K, fitted into a hem provided at the edge of the canvaspiece E. This rod K is connected, at regularly spaced intervals, to one end of each of a plurality of springs L, the opposite ends of which are connected to a stirrupshaped fitting M attached to a member M which is secured on the inner edge of each of the cross-pieces A. The tension of the springs L is suflicient to keep taut the canvas E, which is also connected to the crosspieces B B by a plurality of devices such as shown in Figs. 5 and 6, eachof which devices comprises a flap N stitched on the edge of the canvas E and in which an eyelet N has been rovided, so as to allow of their being hooks to a small cramp-nail or screweye 0, fixed in a slanting position on the inner side of each of the cross-pieces B B.

This makes up the shutter of the press, the operation of which is as follows:

The photographic prints F, after being washed and preliminarily drained, are placed, on the curved riglid part of the press, on top of the canvas supported by the sheet iron D.

These moist papers adhere to the canvas E, thus enablin one to conveniently bring down on them t e shutter. Atthis moment, the canvas E, coining in contact with the canvas E'conforms to the curvature thereof and is vcaused to stretch slightly by the tension exerted thereon b the springs L. Both the canvases E an E are further stretched by the pressure exerted, on two of their respective edges'by the penetration of the beads I into the recesses J (this posi- D to obtain quick drying of the. prints. It

is obvious that prints dried in this manner will remain perfectly flat when dried, thus insuring easy handling while mounting or otherwise treating the prints.

The prints may also be quickly glazed by laying them, picture downwards on a sheet of compressed celluloid or similar material which has been previously fixed on the curved canvas of the lower or fixed part of the press.

The shape and dimensions of the apparatus and the materials employed in its manufacture ma of course, be varied without departing rom the spirit and scope of the invention.

Having thus fully described the nature ofmy said invention, I declare that what I claimisz- 1. A device of the character described, comprising in combination, a frame having in its top surface a pair of parallel marginal grooves disposed at opposite edges thereof, an upwardly curved sheet-metal plate secured to said frame between said grooves, a sheet of fabric stretched over said plate and grooves and secured to opposite edges of the frame, a frame hinged to said first frame at one edge thereof and having a pair of beads adapted to fit into said marginal grooves, a sheet of fabric stretched on said second frame, and means for fastening said frames together at the edge opposite said hinged edge.

2. A device of the character described, comprising in combination, a frame having frame at one edge thereof and having apair of beads adapted to fit into said marg'inal grooves, a sheet of fabric stretched on said second frame, tension means for maintaining said fabric in taut condition over ooves,

the beaded edges of said frame, means for preventing give of the fabric in a direction at right angles to the action of said tension means, and means for fastening said frames together at the edge opposite said hinged edge.

3. A device of the character described,

comprising in combination, a frame having in its top surface a pair of parallel marginal grooves disposed at opposite edges thereof, an upwardly curved sheet-metal plate secured to said frame between said: grooves, a sheet of fabric stretched over said plate and grooves and secured to opposite edges of the frame, a frame hinged to said first frame at one edge thereof, said second frame having a pair of side bars, each provided with a bead adapted to fit into one of said marginal grooves a plurality of springs secured to the si e bars and extending transversely thereof at the surface opposite said beads, a sheet of fabric connected at opposite edges respectively to the springs of the opposite side bars of the frame and enclosing said beads, means for preventing give of the fabric in a direction at right angles to the tension of said springs, and means for fastening said frames together at the edge opposite said hinged edge.

In testimony whereof I have signed my name to this specification.

LEON CRAYSSAC. 

